| [aging process of puer black tea studied by ftir spectroscopy combined with curve-fitting analysis]. | for better determination of the chemical components in the puer black tea, fourier transform infrared spectroscopy was used for obtaining vibrational spectra of puer black tea at different aging time. fourier transform infrared (ftir) spectra indicated that the chemical components had change in puer black tea at different aging time. the leaf of puer black tea was a complex system, its fourier transform infrared spectrum showed a total overlap of each absorption spectrum of various components. e ... | 2015 | 26717740 |
| healing mechanisms of the hydroalcoholic extract and ethyl acetate fraction of green tea (camellia sinensis (l.) kuntze) on chronic gastric ulcers. | green tea is an infusion of unfermented leaves of camellia sinensis (l.) kuntze (theaceae), traditionally used for the treatment of obesity, hypercholesterolemia, and gastric complaints. this study evaluated the mechanisms involved in the gastric ulcer healing of the hydroalcoholic extract from green tea (get), its ethyl acetate fraction, (geac) and epigallocatechin gallate (egcg) using the model of acetic acid-induced gastric ulcer in rats. the chronic gastric ulcer was induced by application o ... | 2016 | 26715119 |
| time series changes in radiocaesium distribution in tea plants (camellia sinensis (l.)) after the fukushima dai-ichi nuclear power plant accident. | radiocaesium ((134)cs and (137)cs) release following the accident at the fukushima dai-ichi nuclear power plant, belonging to the tokyo electric power company caused severe contamination of new tea plant (camellia sinensis (l.)) shoots by radiocaesium in many prefectures in eastern japan. because tea plants are perennial crops, there is the fear that the contamination might last for a long time. the objectives of this study were to reveal time series changes in the distribution of radiocaesium i ... | 2016 | 26695880 |
| effect of black tea consumption on intracellular cytokines, regulatory t cells and metabolic biomarkers in type 2 diabetes patients. | the present study was undertaken to evaluate the effects of black tea intake on inflammatory cytokines and metabolic biomarkers in type 2 diabetes mellitus (t2dm). thirty patients with t2dm were randomly assigned either to a high intake (hi) group, consuming three cups (600 ml) of black tea per day; and a low intake (li) group, administered 1 cup (200 ml) per day, each during a 12-week period. intracellular cytokine expression, regulatory t cells (treg), glycemic and lipid profiles were measured ... | 2016 | 26692322 |
| extraction and free radical scavenging activity of polysaccharide from 'anji baicha' (camellia sinensis (l.) o. kuntze). | in this study, the optimization of the extraction conditions of polysaccharide from 'anji baicha' (camellia sinensis (l.) o. kuntze) (ap) was investigated by response surface methodology (rsm). three main independent variables (extraction temperature, time, ratio of water to raw material) were taken into consideration. and then the free radical scavenging activities of the sample were investigated including scavenging effects of superoxide and hydroxyl radicals. the rsm analysis showed good corr ... | 2016 | 26691382 |
| stereochemistry of the black tea pigments theacitrins a and c. | theacitrins a-c are yellow pigments of black tea that are produced by oxidative coupling of gallocatechins, i.e., flavan-3-ols with pyrogallol-type b-rings. however, their stereostructures have not yet been determined. in this study, dft calculations of nmr chemical shifts of theacitrin c (1) and tddft calculations of the ecd spectra of theacitrinin a (5), a degradation product of theacitrin c (1), were used to determine the stereostructure of the theacitrins. furthermore, the preparation of the ... | 2016 | 26689950 |
| a pilot study testing a natural and a synthetic molluscicide for controlling invasive apple snails (pomacea maculata). | pomacea maculata (formerly p. insularum), an apple snail native to south america, was discovered in louisiana in 2008. these snails strip vegetation, reproduce at tremendous rates, and have reduced rice production and caused ecosystem changes in asia. in this pilot study snails were exposed to two molluscicides, a tea (camellia sinensis) seed derivative (tsd) or niclosamide monohydrate (pestanal(®), 2',5-dichloro-4'-nitrosalicylanilide, cas #73360-56-2). mortality was recorded after exposure to ... | 2016 | 26687501 |
| evaluation of trace metal and polychlorinated biphenyl levels in tea brands of different origin commercialized in italy. | the objectives of this study were to investigate the trace element (hg, cd, pb, cu, zn, ni, fe, cr and se) and polychlorinated biphenyl (pcbs) content of several commercially available brands of green and black tea marketed in italy. the concentrations these chemicals were found to be variable and largely dependent upon the type and brand of analysed tea. the most abundant element among the essential elements was fe, followed by zn, cu, se, ni and cr, whereas pb was the predominant among the tes ... | 2016 | 26683308 |
| shu wang. | my favorite drink is chinese black tea. my favorite reaction is natural dna synthesis. | 2015 | 26681497 |
| antioxidant activity and phenolic content of leaf infusions of myrtaceae species from cerrado (brazilian savanna). | there is considerable interest in identifying new antioxidants from plant materials. several studies have emphasized the antioxidant activity of species belonging to the myrtaceae family. however, there are few reports on these species from the cerrado (brazilian savanna). in this study, the antioxidant activity and phenolic content of 12 native myrtaceae species from the cerrado were evaluated (blepharocalyx salicifolius, eugenia bimarginata, eugenia dysenterica, eugenia klotzschiana, hexachlam ... | 2015 | 26675912 |
| regular consumption of black tea increases circulating kynurenine concentrations: a randomized controlled trial. | circulating neopterin and the ratio of kynurenine to tryptophan (kyn/trp) concentrations are biomarkers of immune activation that have been linked to cardiovascular and total mortality. several in vitro studies indicated that tea flavonoids and other antioxidants can modulate tryptophan breakdown rates and neopterin production in immune cells. we aimed to assess the effects of regular black tea consumption on tryptophan and neopterin metabolisms in vivo. | 2015 | 26673554 |
| eriophyoid mites (acari, eriophyoidea) associated with tea plants, with descriptions of a new genus and two new species. | a new genus and two new species of mites in the family eriophyidae, theaphyes rapaneae gen. n. and sp. n. which is found on the type host rapanea neriifolia (sieb. et zucc.) mez (myrsinaceae) and paracaphyllisa theacea sp. n., are described and illustrated. they are vagrants on the tea plant camellia sinensis (l.) kuntze and no apparent symptoms were detected. a key to the eriophyoid mites including thirteen species associated with tea plants all over the world is provided. | 2015 | 26668544 |
| theaflavin-3, 3'-digallate decreases human ovarian carcinoma ovcar-3 cell-induced angiogenesis via akt and notch-1 pathways, not via mapk pathways. | theaflavin-3, 3'-digallate (tf3) is a black tea polyphenol produced from polymerization and oxidization of the green tea ployphenols epicatechin gallate and (-)-epigallocatechin-3-gallate (egcg) during fermentation of fresh tea leaves. tf3 has been reported to have anticancer properties. however, the effect of tf3 on tumor angiogenesis and the underlying mechanisms are not clear. in the present study, tf3 was verified to inhibit tumor angiogenesis. compared with egcg, tf3 was more potent. tf3 in ... | 2016 | 26648098 |
| analysis of naturally occurring fluoride in commercial teas and estimation of its daily intake through tea consumption. | the aim of this study was to determine the levels of fluoride in commercial teas and to estimate the contribution of tea consumption to the fluoride recommended daily allowance. a total of 558 tea products in 6 categories, green tea, black tea, oolong tea, pu'er tea, white tea, and reprocessed tea, were collected in the period from 2010 to 2013. the levels of fluoride in infusions of these teas were determined by a fluoride-ion selective electrode. the mean fluoride level in all of the tea sampl ... | 2016 | 26647101 |
| identification and expression profiling of the auxin response factors (arfs) in the tea plant (camellia sinensis (l.) o. kuntze) under various abiotic stresses. | auxin response factor (arf) proteins are a multigene family of regulators involved in various physiological and developmental processes in plants. however, their modes of action in the tea plant (camellia sinensis) remain largely unknown. in this study, we identified 15 members of the tea arf gene family, using the public information about c. sinensis, both in our laboratory, as well as in other laboratories, and analyzed their phylogenetic relationships, conserved domains and the compositions o ... | 2016 | 26637949 |
| mutagenicity assessment of drinking water in combination with flavored black tea bags: a cross sectional study in tehran. | diseases related to water impurities may present as major public health burdens. the present study aimed to assess the mutagenicity of drinking water from different zones of tehran, and evaluate possible health risks through making tea with tea bags, by ames mutagenicity test using ta 100, ta 98 and yg1029 strains. for this purpose, 450 water samples were collected over the period of july to december 2014 from 5 different zones of tehran. except for one sample, no mutagenic potential was detecte ... | 2015 | 26625748 |
| effects of tannic acid, green tea and red wine on herg channels expressed in hek293 cells. | tannic acid presents in varying concentrations in plant foods, and in relatively high concentrations in green teas and red wines. human ether-à-go-go-related gene (herg) channels expressed in multiple tissues (e.g. heart, neurons, smooth muscle and cancer cells), and play important roles in modulating cardiac action potential repolarization and tumor cell biology. the present study investigated the effects of tannic acid, green teas and red wines on herg currents. the effects of tannic acid, tea ... | 2015 | 26625122 |
| bioactive constituents of wood rot extract of tea, camellia sinensis l.o. kuntze against alates of low country live wood termite glyptotermes dilatatus bugnion and popoff (isoptera: kalotermitidae). | low country live wood termite (lclwt), glyptotermes dilatatus is attractive to rotted stumps of tea plant, camellia sinensis. rotted stumps are formed due to the attack of wood rot fungi in pruned stems. the objective of the present study was to investigate the response of lclwt to extracts of rotted and healthy stems of susceptible tea cultivars, tri 2023 and tri 4042 and tolerant cultivars, tri 2027 and tri 4049 and isolate the lclwt attractive fractions of tea stem extract. since pieces of ro ... | 2015 | 26618100 |
| temperature and time of steeping affect the antioxidant properties of white, green, and black tea infusions. | tea (camellia sinensis) is the most highly consumed beverage in the world next to water. the common way of preparation is steeping in hot water which is varying for different type of tea. we investigated the antioxidant properties of 6 type of tea leaves under different time and temperatures of extraction method used. in general, all samples tested in this study demonstrated high levels of antioxidant capacity and antioxidant activity. the results indicate that the antioxidants activity is signi ... | 2016 | 26613545 |
| a bibliometric study of scientific literature in scopus on botanicals for treatment of androgenetic alopecia. | in androgenetic alopecia, a number of botanicals are available that can effectively slow or reduce hair loss and inflammation or stimulate partial hair regrowth. the aim of this study was to provide a descriptive overview of the impact and production of literature on botanicals used for androgenetic alopecia and to perform a citation analysis of the related research articles. | 2016 | 26608588 |
| extraction, partial purification and determination of some biochemical properties of β-glucosidase from tea leaves (camellia sinensis l.). | this research was carried out to determine biochemical properties of β-glucosidase (β-d-glucoside glucohydrolase, ec 3.2.1.21) isolated from turkish tea leaves. two protein peaks containing β-glucosidase activity were recovered and characterized, which were denoted as isoenzyme a and isoenzyme b. their ph optimum, thermal resistances, affinity towards p-nitrophenyl-β-d-glucopyranoside differed markedly. they both displayed maximal activity at ph 5.0. the effects of the inhibitors tested varied i ... | 2015 | 26604410 |
| effects of alternative steeping methods on composition, antioxidant property and colour of green, black and oolong tea infusions. | cold water steeping is reported to maximise tea health benefits, but requires long infusion time. in this work, the employment of a brief hot infusion step followed by ice addition was evaluated. the comparison of this innovative method with hot and cold steeping was investigated on green, black and oolong teas. catechins, xanthines and gallic acid content, antioxidant power, total phenolics and colour analysis were evaluated. hot infusion shown rapid extractive power, but relevant compound degr ... | 2015 | 26604404 |
| spatial variability of theaflavins and thearubigins fractions and their impact on black tea quality. | the spatial distribution of theaflavin and thearubigin fractions and their impact on black tea quality were investigated using multivariate and geostatistics techniques. black tea samples were collected from tea gardens of six geographical regions of assam and west bengal, india. total theaflavin (tf) and its four fractions of upper assam, south bank and north bank teas were higher than the other regions. simple theaflavin showed highest significant correlation with tasters' quality. low molecul ... | 2015 | 26604370 |
| new ethanol extraction improves the anti-obesity effects of black tea. | black tea has been reported to have anti-obesity effects in both rodents and humans. gallic acid, an active component of black tea, decomposes quickly into pyrogallol in high-temperature solutions. this study introduced a new, aqueous ethanol extraction of black tea, which resulted in extracts with higher concentrations of gallic acid than conventional black tea extracts prepared by hot-water extraction or hot-ethanol extraction. we confirmed that, compared with the hot-water extract of black te ... | 2016 | 26604105 |
| altering the phenolics profile of a green tea leaves extract using exogenous oxidases. | transformation from green tea leaves into black tea involves oxidation of catechins into theaflavins and other complex phenolics by endogenous enzymes in tea leaves. by employing tyrosinase and laccase, both from agaricus bisporus, on green tea catechins, the oxidation process was directed towards a higher theaflavins content, which is considered an important quality parameter in tea. the main tea catechins were incubated with tyrosinase and laccase, and product formation was monitored by rp-uhp ... | 2016 | 26593607 |
| antioxidant activities of distiller dried grains with solubles as protein films containing tea extracts and their application in the packaging of pork meat. | distiller dried grains with solubles (ddgs) as protein (dp) films were prepared. additionally, to prepare anti-oxidant films, green tea extract (gte), oolong tea extract (ote), and black tea extract (bte) were incorporated into the dp films. consequently, the incorporation of the tea extracts did not alter the physical properties of the films much, whereas the antioxidant activities, such as abts and dpph radical scavenging activities were observed. to apply the dp films containing tea extracts ... | 2016 | 26593480 |
| the effect of different drinks on the color stability of different restorative materials after one month. | the aim of this study was to evaluate the effect of three different drinks on the color parameters of four different restorative materials. | 2015 | 26587410 |
| mechanisms of body weight reduction and metabolic syndrome alleviation by tea. | tea, a popular beverage made from leaves of the plant camellia sinensis, has been shown to reduce body weight, alleviate metabolic syndrome, and prevent diabetes and cardiovascular diseases in animal models and humans. such beneficial effects have generally been observed in most human studies when the level of tea consumption was three to four cups (600-900 mg tea catechins) or more per day. green tea is more effective than black tea. in spite of numerous studies, the fundamental mechanisms for ... | 2016 | 26577614 |
| estimation of flavonoid intake in older australians: secondary data analysis of the blue mountains eye study. | flavonoids, consumed in plant-based foods, have been linked to risk reduction of cancers, cardiovascular, and neurodegenerative diseases. the paucity of information on dietary sources and quantities of flavonoid intake in older adults limits interpretation of epidemiological studies that link flavonoid intake with health outcomes in this population. it was our aim to describe total flavonoid intake, including flavonoid subclasses, in older australians and to identify rich and commonly consumed s ... | 2015 | 26571356 |
| regulation of formation of volatile compounds of tea (camellia sinensis) leaves by single light wavelength. | regulation of plant growth and development by light wavelength has been extensively studied. less attention has been paid to effect of light wavelength on formation of plant metabolites. the objective of this study was to investigate whether formation of volatiles in preharvest and postharvest tea (camellia sinensis) leaves can be regulated by light wavelength. in the present study, in contrast to the natural light or dark treatment, blue light (470 nm) and red light (660 nm) significantly incre ... | 2015 | 26567525 |
| biotechnological advances in tea (camellia sinensis [l.] o. kuntze): a review. | this article presents a comprehensive review on the success and limitations of biotechnological approaches aimed at genetic improvement of tea with a purpose to explore possibilities to address challenging areas. tea is a woody perennial tree with a life span of more than 100 years. conventional breeding of tea is slow and limited primarily to selection which leads to narrowing down of its genetic base. harnessing the benefits of wild relatives has been negligible due to low cross-compatibility, ... | 2016 | 26563347 |
| black tea: phytochemicals, cancer chemoprevention, and clinical studies. | tea (camellia sinensis l.) is the most popular, flavored, functional, and therapeutic non-alcoholic drink consumed by two-thirds of the world's population. black tea leaves are reported to contain thousands of bioactive constituents such as polyphenols, amino acids, volatile compounds, and alkaloids that exhibit a range of promising pharmacological properties. due to strong antioxidant property, black tea inhibits the development of various cancers by regulating oxidative damage of biomolecules, ... | 2017 | 26561007 |
| antioxidant activity and phenolic content of leaf infusions of myrtaceae species from cerrado (brazilian savanna). | abstractthere is considerable interest in identifying new antioxidants from plant materials. several studies have emphasized the antioxidant activity of species belonging to the myrtaceae family. however, there are few reports on these species from the cerrado (brazilian savanna). in this study, the antioxidant activity and phenolic content of 12 native myrtaceae species from the cerrado were evaluated (blepharocalyx salicifolius, eugenia bimarginata, eugenia dysenterica, eugenia klotzschiana, h ... | 2015 | 26560669 |
| isolation and expression analysis of 18 csbzip genes implicated in abiotic stress responses in the tea plant (camellia sinensis). | basic leucine zipper (bzip) transcription factors (tfs) play essential roles in regulating stress processes in plants. despite the economic importance of this woody crop, there is little information about bzip tfs in tea plants. in this study, 18 bzip genes were isolated from the tea plant (camellia sinensis) and named sequentially from csbzip1 to csbzip18. according to the phylogenetic classification as in arabidopsis, the csbzip genes spanned ten subgroups (group a, b, c, d, e, f, h, i, s and ... | 2015 | 26555901 |
| topical lipophilic epigallocatechin-3-gallate on herpes labialis: a phase ii clinical trial of averteax formula. | previous in vitro and in vivo studies indicated that catechins from the tea plant (camellia sinensis) have a therapeutic effect on herpes simplex virus infections. the aim of this study was to clinically evaluate a topical proprietary formulation containing lipophilic catechins (averteax, camellix, llc, evans, ga, usa) on recurrent herpes labialis. | 2015 | 26548726 |
| toothpastes containing abrasive and chemical whitening agents: efficacy in reducing extrinsic dental staining. | this in vitro study evaluated the efficacy of toothpastes containing abrasive and chemical whitening agents in reducing the extrinsic discoloration of dental enamel. sixty slabs of dentin from human teeth were sealed so that only the enamel surface was exposed. the enamel surfaces were photographed for initial color assessment. staining was performed by immersing the dental slabs in 0.2% chlorhexidine solution for 2 minutes and then in black tea for 60 minutes. this process was repeated 15 times ... | 2017 | 26545284 |
| genome-wide identification of genes probably relevant to the uniqueness of tea plant (camellia sinensis) and its cultivars. | tea (camellia sinensis) is a popular beverage all over the world and a number of studies have focused on the genetic uniqueness of tea and its cultivars. however, molecular mechanisms underlying these phenomena are largely undefined. in this report, based on expression data available from public databases, we performed a series of analyses to identify genes probably relevant to the uniqueness of c. sinensis and two of its cultivars (lj43 and zh2). evolutionary analyses showed that the evolutiona ... | 2015 | 26543846 |
| new sample preparation method for quantification of phenolic compounds of tea (camellia sinensis l. kuntze): a polyphenol rich plant. | chemical analysis of the sri lankan tea (camellia sinensis, l.) germplasm would immensely contribute to the success of the tea breeding programme. however, the polyphenols, particularly catechins (flavan-3-ols), are readily prone to oxidation in the conventional method of sample preparation. therefore, optimization of the present sample preparation methodology for the profiling of metabolites is much important. two sample preparation methodologies were compared, fresh leaves (as in the conventio ... | 2015 | 26543665 |
| cs-mir156 is involved in the nitrogen form regulation of catechins accumulation in tea plant (camellia sinensis l.). | the nitrogen source affects the growth of tea plants and regulates the accumulation of catechins in the leaves. in this report, we assessed the influences of nh4(+) and no3(-) on plant growth, catechins accumulation and associated gene expression. compared with the preferential nitrogen source nh4(+), when no3(-) was supplied as the sole nitrogen source, tea plants showed similar symptoms with the nitrogen-free treatments and showed lower nitrogen, free amino acid accumulation, chlorophyll conte ... | 2015 | 26520678 |
| analysis of stereochemistry and biosynthesis of epicatechin in tea plants by chiral phase high performance liquid chromatography. | tea (camellia sinensis) is rich in flavan-3-ols (catechins), especially epicatechin (ec), which is the predominant extension unit of polymeric proanthocyanidins (pas). however, studies assessing ec's stereochemistry are scarce. here, a high performance liquid chromatography column using amylose tris-(3, 5-dimethylphenylcarbamate) immobilized on silica-gel as chiral stationary phases (csps) was applied to explore its stereochemistry and biosynthetic pathway in tea plants. the results revealed (-) ... | 2015 | 26519617 |
| erratum: relationship between gene expression and the accumulation of catechin during spring and autumn in tea plants (camellia sinensis l.). | [this corrects the article doi: 10.1038/hortres.2015.11.][this corrects the article doi: 10.1038/hortres.2015.11.]. | 2015 | 26506527 |
| relationship between gene expression and the accumulation of catechin during spring and autumn in tea plants (camellia sinensis l.). | the tea plant (camellia sinensis l.) is an important commercial crop with remarkably high catechin concentrations. tea is popular worldwide given the plant's health benefits. catechins are the main astringent substance in tea and are synthesized mainly via the phenylpropanoid pathway. in this study, eight cultivars of tea plants harvested both in spring and autumn were used to investigate differences in catechin concentrations by using high-performance liquid chromatography. the expression level ... | 2015 | 26504566 |
| nontargeted analysis using ultraperformance liquid chromatography-quadrupole time-of-flight mass spectrometry uncovers the effects of harvest season on the metabolites and taste quality of tea (camellia sinensis l.). | the chemical composition and taste quality of tea fluctuate seasonally. however, the compounds responsible for the seasonal variation of metabolic pattern and taste quality are far from clear. this study compared the metabolite profiles of green teas of nine varieties that were plucked in spring, summer, and autumn by using ultraperformance liquid chromatography-quadrupole time-of-flight mass spectrometry (uplc-q-tof/ms) on a reversed phase column. a multivariate analysis indicated distinct diff ... | 2015 | 26494158 |
| reidentification of sex pheromones of tea geometrid ectropis obliqua prout (lepidoptera: geometridae). | tea geometrid ectropis obliqua prout (lepidoptera: geometridae) is an important defoliator of the tree crop camellia sinensis l. in china. the sex pheromones of e. obliqua have not been identified, but have potential importance relative to the biological control of this predator. in this study, the female sex pheromones of e. obliqua were identified and evaluated for use in the monitoring and mass trapping of this pest. the sex pheromone extracts were subjected to gas chromatography-electroanten ... | 2016 | 26491188 |
| micronutrients (b, co, cu, fe, mn, mo and zn) content in made tea (camellia sinensis l.) and tea infusion with health prospect: a critical review. | tea (camellia sinensis l.) is a perennial acidophilic crop, and known to be a non-alcoholic stimulating beverage that is most widely consumed after water. the aim of this review paper is to provide a detailed documentation of selected micronutrient contents, viz. boron (b), cobalt (co), copper (cu), iron (fe), manganese (mn), molybdenum (mo) and zinc (zn) in made tea and tea infusion. available data from the literature were used to calculate human health aspect associated with the consumption of ... | 2015 | 26478953 |
| camellia sinensis mediated enhancement of humoral immunity to particulate and non-particulate antigens. | the most common drinking beverage in large portion of the world is camellia sinensis (green tea). in the present study, we evaluated the adjuvant effect of green tea and tea polyphenols to particulate and non-particulate antigens. balb/c mice were immunized with particulate and non-particulate antigens. modulation of immunoglobulin-secreting splenocytes, igg-mediated and igm-mediated immunity, was evaluated by hemolytic plaque assay and enzyme-linked immunosorbent assay, respectively. dose-depen ... | 2016 | 26478000 |
| effect of black tea on antioxidant, textural, and sensory properties of chinese steamed bread. | black tea is rich in phenolic antioxidants and has various health benefits. chinese steamed bread (csb) is a traditional food produced through steaming of fermented dough. black tea extracts were incorporated into northern style csb formulation at varying concentrations up to 175mg gallic acid equivalent/gram of wheat flour. gelatinization properties of wheat flour were not affected by the black tea addition. rheological analysis of wheat flour showed that black tea increased pasting viscosity, ... | 2016 | 26471674 |
| volatile compounds and sensory characteristics of various instant teas produced from black tea. | various instant teas produced differently from black tea [freeze-dried instant tea (fdit), spray-dried instant tea (sdit), and decaffeinated instant tea (dcit)], were compared for their differences in volatile compounds as well as descriptive sensory analysis (dsa). a total of 63 volatile compounds in all tea samples (eight aldehydes, ten alcohols, nine ketones, five esters, eight acids, ten terpenes/terpenoids, ten furans/furanones, two pyrroles, and one miscellaneous compound) were tentatively ... | 2016 | 26471629 |
| simultaneous determination of free amino acids in pu-erh tea and their changes during fermentation. | pu-erh ripened tea is produced through a unique microbial fermentation process from the sun-dried leaves of large-leaf tea species (camellia sinensis (linn.) var. assamica (masters) kitamura) in yunnan province of china. in this study, the changes of amino acid profiles during fermentation of pu-erh tea were investigated, based on the improved hplc-uv method with pitc pre-column derivatization for the simultaneous determination of twenty free amino acids. results showed that aspartic acid, gluta ... | 2016 | 26471603 |
| green tea extract for external anogenital warts. | catephen (kora corporation ltd) is a herbal medicinal product consisting predominantly of catechins (sinecatechins) extracted from camellia sinensis (l.) o. kuntze folium (green tea leaf) formulated as a topical preparation for the treatment of external genital and perianal warts (condylomata acuminata).(1) marketing authorisation for an ointment containing 0.1g of green tea extract per gram (10%) was granted by the medicines and healthcare products regulatory agency (mhra) under the mutual reco ... | 2015 | 26471269 |
| comparison between folin-ciocalteu and prussian blue assays to estimate the total phenolic content of juices and teas using 96-well microplates. | folin-ciocalteu colorimetric assay (fc) is the most widely used assay to estimate the total phenolic content in foods, beverages, herbs and other plant extracts, but many chemical compounds may act as interfering agents, producing inaccurate estimations of the real concentration of phenolic compounds in the matrix. based on this limitation, the objective of this study was to compare, quantitatively, the folin-ciocalteu and prussian blue (pb) assays in estimating the total phenolic content in pur ... | 2015 | 26448565 |
| differential metabolic profiles during the albescent stages of 'anji baicha' (camellia sinensis). | 'anji baicha' is an albino tea cultivar with white shoots at low air temperature and green shoots at high air temperature in early spring. the metabolite contents in the shoots dynamically vary with the color changes and with shoot development. to investigate the metabolomic variation during the albescent and re-greening stages, gas chromatography-mass spectrometry combined with multivariate analysis were applied to analyze the metabolite profiles in the different color stages during the develop ... | 2015 | 26444680 |
| long-term intake of white tea prevents oxidative damage caused by adriamycin in kidney of rats. | white tea infusion (camelia sinensis) has antioxidants properties. the infusion contains polyphenols that have been proposed to induce antioxidant response element (are) response via nuclear factor e2-related factor 2 (nrf2). adriamycin (adr) has antitumour properties and oxidative effects. oxidative stress is related to a variety of kidney diseases. prevention of the oxidative stress through long-term intake of white tea and the study of the molecular mechanisms involved in protection could be ... | 2016 | 26441376 |
| role of nicotine and camellia sinensis on the developing femur of chick. | to study the harmful effects of nicotine on the developing femur of chick and to observe the role of antioxidant camellia sinensis in the prevention of these effects. | 2015 | 26440840 |
| arrhythmogenic risk assessment following four-week pretreatment with nicotine and black tea in rat. | there is the controversy concerning the main component of tobacco, which is responsible for its arrhythmogenesis. in addition, there is the lack of adequate information about the influence of combination of black tea and nicotine on heart rhythm. | 2015 | 26436072 |
| the effect of herbal tea containing fenugreek seed on the signs of breast milk sufficiency in iranian girl infants. | one of the important reasons behind termination of breast-feeding in the first six months after childbirth is insufficient production of breast milk. | 2015 | 26430522 |
| transcriptional responses and flavor volatiles biosynthesis in methyl jasmonate-treated tea leaves. | tea (camellia sinensis) has long been consumed worldwide for its amazing flavor and aroma. methyl jasmonate (meja), which acts as an effective elicitor among the plant kingdom, could mostly improve the quality of tea aroma by promoting flavor volatiles in tea leaves. although a variety of volatile secondary metabolites that contribute to aroma quality have been identified, our understanding of the biosynthetic pathways of these compounds has remained largely incomplete. therefore, information ab ... | 2015 | 26420557 |
| intake and major sources of dietary flavonoid in korean adults: korean national health and nutrition examination survey 2010-2012. | with an effort to investigate possible relationship between flavonoids and health, an accurate estimation of flavonoid intake is valuable. we estimated dietary flavonoid intake and identified the major food sources. subjects were healthy adults aged >=19 y (n=11,474) who completed the 24-h dietary recall of the korean national health and nutritional examination survey (2010-2012). the us department of agriculture and newly estimated or published values for typical korean foods were combined into ... | 2015 | 26420187 |
| in vitro antioxidant effect of camellia sinensis on human cell cultures. | camellia sinensisis traditionally used in many polyherbal preparations for the treatment of different diseases and infections. its action has been associated with its antioxidant activities. in this study, antioxidant effect of camellia sinensis on hydrogen peroxide-induced human lymphocyte cell cultures was estimated. camellia sinensis showed high contents of ascorbic acid, phenols, flavonoids, and flavonols. good scavenging activity was evident by scavenging assays e.g. 2,2-diphenyl-2-picrylhy ... | 2015 | 26408866 |
| dissipation pattern, processing factors, and safety evaluation for dimethoate and its metabolite (omethoate) in tea (camellia sinensis). | residue levels of dimethoate and its oxon metabolite (omethoate) during tea planting, manufacturing, and brewing were investigated using a modified quechers sample preparation and gas chromatography. dissipation of dimethoate and its metabolite in tea plantation followed the first-order kinetic with a half-life of 1.08-1.27 d. tea manufacturing has positive effects on dimethoate dissipation. processing factors of dimethoate are in the range of 2.11-2.41 and 1.41-1.70 during green tea and black t ... | 2015 | 26406463 |
| chinese green tea and acute hepatitis: a rare yet recurring theme. | a previously healthy 16-year-old girl presented with signs of acute hepatitis. on initial enquiry, she had not taken any prescribed or 'over-the-counter' medications, and there was no recent travel history. further investigations revealed no viral, autoimmune or metabolic cause of hepatitis. only following specific questioning did she reveal that she had, in the preceding 3 months, regularly consumed internet ordered chinese green tea, which contained camellia sinensis. after ceasing green tea c ... | 2015 | 26400588 |
| rainwater, soil water, and soil nitrate effects on oxygen isotope ratios of nitrous oxide produced in a green tea (camellia sinensis) field in japan. | the oxygen exchange fraction between soil h(2)o and n(2)o precursors differs in soils depending on the responsible n(2)o-producing process: nitrification or denitrification. this study investigated the o-exchange between soil h(2)o and n(2)o precursors in a green tea field with high n(2)o emissions. | 2015 | 26377018 |
| a single oral administration of theaflavins increases energy expenditure and the expression of metabolic genes. | theaflavins are polyphenols found in black tea, whose physiological activities are not well understood. this study on mice evaluated the influence of a single oral administration of theaflavins on energy metabolism by monitoring the initial metabolic changess in skeletal muscle and brown adipose tissue (bat). oxygen consumption (vo2) and energy expenditure (ee) were increased significantly in mice treated with theaflavin rich fraction (tf) compared with the group administered vehicle alone. ther ... | 2015 | 26375960 |
| pyrrolizidine alkaloids in food and feed on the belgian market. | pyrrolizidine alkaloids (pas) are widely distributed plant toxins with species dependent hepatotoxic, carcinogenic, genotoxic and pneumotoxic risks. in a recent european food safety authority (efsa) opinion, only two data sets from one european country were received for honey, while one feed data set was included. no data are available for food or feed samples from the belgian market. we developed an lc-ms/ms method, which allowed the detection and quantification of 16 pas in a broad range of ma ... | 2015 | 26373269 |
| transcriptome analysis reveals key flavonoid 3'-hydroxylase and flavonoid 3',5'-hydroxylase genes in affecting the ratio of dihydroxylated to trihydroxylated catechins in camellia sinensis. | the ratio of dihydroxylated to trihydroxylated catechins (rdtc) is an important indicator of tea quality and biochemical marker for the study of genetic diversity. it is reported to be under genetic control but the underlying mechanism is not well understood. flavonoid 3'-hydroxylase (f3'h) and flavonoid 3',5'-hydroxylase (f3'5'h) are key enzymes involved in the formation of dihydroxylated and trihydroxylated catechins. the transcriptome and hplc analysis of tea samples from longjing43 and zhong ... | 2015 | 26367395 |
| pyrrolizidine and tropane alkaloids in teas and the herbal teas peppermint, rooibos and chamomile in the israeli market. | dehydro pyrrolizidine alkaloids (dehydro pas) are carcinogenic phytotoxins prevalent in the boraginaceae, asteraceae and fabaceae families. dehydro pas enter the food and feed chain by co-harvesting of crops intended for human and animal consumption as well as by carry-over into animal-based products such as milk, eggs and honey. recently the occurrence of dehydro pas in teas and herbal teas has gained increasing attention from the eu, due to the high levels of dehydro pas found in commercially ... | 2015 | 26365752 |
| effects of flavonol-rich green tea cultivar (camellia sinensis l.) on plasma oxidized ldl levels in hypercholesterolemic mice. | to examine the possible benefits of tea flavonols, we compared anti-atherogenic effects between common and flavonol-rich tea cultivars. the tea infusion made from a flavonol-rich cultivar, but not a common cultivar, significantly decreased the plasma oxidized low-density lipoprotein level in mice fed a high-cholesterol diet. the result suggests that tea flavonols have the potential to protect against cardiovascular diseases. | 2016 | 26364623 |
| tea consumption and cognitive impairment: a cross-sectional study among chinese elderly. | laboratorial and epidemiological researches suggested that tea exhibited potential neuroprotective effect which may prevent cognitive impairment, but there were few data among the elderly aged 60 years and above in china. | 2015 | 26359663 |
| black tea consumption and risk of skin cancer: an 11-year prospective study. | tea consumption has been shown to protect against skin carcinogenesis in laboratory-based studies; however, epidemiological evidence is limited and inconsistent. this prospective study examined the association between black tea consumption and the incidence of basal cell carcinoma (bcc) and squamous cell carcinoma (scc). usual black tea consumption was estimated from food frequency questionnaires completed in 1992, 1994, and 1996 by 1,325 australian adults. all histologically confirmed skin canc ... | 2015 | 26359536 |
| multiresidue determination of pesticides in tea by gas chromatography-tandem mass spectrometry. | an efficient and reliable gc-ms/ms method for the multiresidue determination of pesticides in tea was developed by modifying the japanese official multiresidue method. sample preparation was carefully optimized for the efficient removal of coextracted matrix components. the optimal sample preparation procedure involved swelling of the sample in water; extraction with acetonitrile; removal of water by salting-out; and sequential cleanup by ods, graphitized carbon black/primary secondary amine (gc ... | 2015 | 26357887 |
| towards biological plausibility of electronic noses: a spiking neural network based approach for tea odour classification. | the paper presents a novel encoding scheme for neuronal code generation for odour recognition using an electronic nose (en). this scheme is based on channel encoding using multiple gaussian receptive fields superimposed over the temporal en responses. the encoded data is further applied to a spiking neural network (snn) for pattern classification. two forms of snn, a back-propagation based spikeprop and a dynamic evolving snn are used to learn the encoded responses. the effects of information en ... | 2015 | 26356597 |
| comparative evaluation of five plant extracts and juices for nanoiron synthesis and application for hexavalent chromium reduction. | the effectiveness of five plant extracts and juices, i.e. extracts of camellia sinensis (green tea, gt), syzygium aromaticum (clove, cl), mentha spicata (spearmint, sm), punica granatum juice (pomegranate, pg) and red wine (rw), for the production of nanoiron suspensions and their application for cr(vi) reduction was investigated. polyphenols contained in extracts act as reducing agents for iron ions in aqueous solutions, forming thus iron nanoparticles, and stabilize the nanoparticles produced ... | 2016 | 26356183 |
| green tea component egcg, insulin and igf-1 promote nuclear efflux of atrophy-associated transcription factor foxo1 in skeletal muscle fibers. | prevention and slowing of skeletal muscle atrophy with nutritional approaches offers the potential to provide far-reaching improvements in the quality of life for our increasingly aging population. here we show that polyphenol flavonoid epigallocatechin 3-gallate (egcg), found in the popular beverage green tea (camellia sinensis), demonstrates similar effects to the endogenous hormones insulin-like growth factor 1 (igf-1) and insulin in the ability to suppress action of the atrophy-promoting tra ... | 2015 | 26344776 |
| complementary transcriptomic and proteomic analyses of a chlorophyll-deficient tea plant cultivar reveal multiple metabolic pathway changes. | to uncover the mechanisms that underlie the chlorina phenotype of the tea plant, this study employs morphological, biochemical, transcriptomic, and itraq-based proteomic analyses to compare the green tea cultivar lj43 and the yellow-leaf tea cultivar zh1. zh1 exhibited the chlorina phenotype, with significantly decreased chlorophyll content and abnormal chloroplast development compared with lj43. zh1 also displayed higher theanine and free amino acid content and lower carotenoid and catechin con ... | 2016 | 26344129 |
| investigation of adverse effects of interactions between herbal drugs and natural blood clotting mechanism. | throughout the world, herbal medicines are consumed by most of the patients without considering their adverse effects. many herbal medicines/plant extracts have been reported to interact with the natural blood clotting system. in continuation to this effort, thirty medicinal plant extracts were allowed to interact with citrated human blood and the clotting time was measured after re-calcification in vitro using lee and white method. the aq. leaf ext. of syzygium cumini and camellia sinensis sign ... | 2016 | 26340850 |
| the acute effects of green tea and carbohydrate coingestion on systemic inflammation and oxidative stress during sprint cycling. | green tea (camellia sinensis) has anti-oxidative and anti-inflammatory effects, which may be beneficial to athletes performing high-intensity exercise. this study investigated the effects of carbohydrate and green tea coingestion on sprint cycling performance and associated oxidative stress and immunoendocrine responses to exercise. in a crossover design, 9 well-trained male cyclists completed 3 sets of 8 repetitions of 100-m uphill sprint cycling while ingesting green tea and carbohydrate (tea) ... | 2015 | 26319564 |
| ca(2+) and cam are involved in al(3+) pretreatment-promoted fluoride accumulation in tea plants (camellia sinesis l.). | tea plant (camellia sinensis (l.) o. kuntze) is known to be a fluoride (f) and aluminum (al(3+)) hyper-accumulator. previous study showed that pre-treatment of al(3+) caused a significant increase of f accumulation in tea plants. however, less is known about the intricate network of al(3+) promoted f accumulation in tea plants. in this study, the involvement of endogenous ca(2+) and cam in al(3+) pretreatment-promoted f accumulation in tea plants was investigated. our results showed that al(3+) ... | 2015 | 26318146 |
| transcriptome-wide identification of camellia sinensis wrky transcription factors in response to temperature stress. | tea plant [camellia sinensis (l.) o. kuntze] is a leaf-type healthy non-alcoholic beverage crop, which has been widely introduced worldwide. tea is rich in various secondary metabolites, which are important for human health. however, varied climate and complex geography have posed challenges for tea plant survival. the wrky gene family in plants is a large transcription factor family that is involved in biological processes related to stress defenses, development, and metabolite synthesis. there ... | 2016 | 26308611 |
| effects of brewing conditions on the antioxidant capacity of twenty-four commercial green tea varieties. | a novel paper-based nanoceria reducing antioxidant capacity (nanocerac) assay for antioxidant detection (sharpe, frasco, andreescu, & andreescu, 2012), has been adapted for the first time as a high-throughput method, in order to measure the effect of brewing conditions and re-infusion on the antioxidant capacity of twenty-four commercial green teas. the oxygen radical absorbance capacity (orac) assay, frequently applied to complex foods and beverages, was used as a comparator measure of antioxid ... | 2016 | 26304363 |
| using uv-vis spectroscopy for simultaneous geographical and varietal classification of tea infusions simulating a home-made tea cup. | in this work we proposed a method to verify the differentiating characteristics of simple tea infusions prepared in boiling water alone (simulating a home-made tea cup), which represents the final product as ingested by the consumers. for this purpose we used uv-vis spectroscopy and variable selection through the successive projections algorithm associated with linear discriminant analysis (spa-lda) for simultaneous classification of the teas according to their variety and geographic origin. for ... | 2016 | 26304362 |
| pantoea theicola sp. nov., isolated from black tea. | a gram-negative, facultatively anaerobic strain was isolated from black tea. on the basis of 16s rrna gene sequence similarity comparisons, strain qc88-366t was grouped into the genus pantoea, being related most closely to the type strains of pantoea gaviniae (98.5 %) and pantoea calida (98.3 %); sequence similarities were ≤ 97.0 % to the type strains of other species of the genus pantoea. multilocus sequence analysis based on partial sequences of the gyrb, rpob, infb and atpd genes also reveale ... | 2015 | 26297578 |
| re: randomized clinical trial of brewed green and black tea in men with prostate cancer prior to prostatectomy. | | 2015 | 26292860 |
| coffee prevents proximal colorectal adenomas in japanese men: a prospective cohort study. | this prospective cohort study aimed to show that coffee prevents the recurrence of colorectal tumors (adenomas, precursors of colorectal cancer, and early-stage colorectal cancers) as well as colorectal cancer. the present study included 307 patients who participated in a clinical study that required endoscopy to remove a colorectal tumor. the amount of coffee consumed by the patients at study inclusion and the frequency of colorectal tumors, as detected by colonoscopy over the subsequent 4 year ... | 2016 | 26291025 |
| a study on quality components and sleep-promoting effects of gaba black tea. | the aims of this study were to analyze the changes in quality components of gamma (γ)-aminobutyric acid (gaba) black tea during processing, and to investigate the effect of three dosages of gaba black tea on sleep improvement. the results showed that the gaba content was increased significantly up to 2.70 mg g(-1) after vacuum anaerobic and aerobic treatment. in addition, the content of gaba after drying reached 2.34 mg g(-1), which achieved the standard of gaba tea. during the entire processing ... | 2015 | 26290415 |
| effect of brewing duration on the antioxidant and hepatoprotective abilities of tea phenolic and alkaloid compounds in a t-bhp oxidative stress-induced rat hepatocyte model. | tea is an interesting source of antioxidants capable of counteracting the oxidative stress implicated in liver diseases. we investigated the impact of antioxidant molecules provided by a mixture of teas' leaves (green, oolong, pu-erh) after different infusion durations in the prevention of oxidative stress in isolated rat hepatocytes, by comparison with pure epigallocatechin-3-gallate (egcg), the main representative of tea catechins. dried aqueous tea extracts (ate) obtained after 5, 15 and 30 m ... | 2015 | 26287152 |
| chronic black tea extract consumption improves endothelial function in ovariectomized rats. | menopause escalates the risk of cardiovascular diseases in women. there is an unmet need for better treatment strategy for estrogen-deficiency-related cardiovascular complications. here we investigated the impact of chronic black tea extract (bt) consumption on cardiovascular function and lipid metabolism using a rat model of estrogen deficiency. | 2016 | 26276555 |
| molecular cloning and characterization of spermine synthesis gene associated with cold tolerance in tea plant (camellia sinensis). | spermine synthase (spms, ec 2.5.1.22), enzyme of spermine (spm) biosynthesis, has been shown to be related to stress response. in this study, attempts were made to clone and characterize a gene encoding spms from tea plant (camellia sinensis). the effect of exogenous application of spm in c. sinensis subjected to low-temperature stress was also investigated. a full-length spms complementary dna (cdna) (csspms) with an open reading frame of 1113 bp was cloned using reverse transcription-pcr and r ... | 2015 | 26276446 |
| effects of green tea (camellia sinensis) mouthwash containing 1% tannin on dental plaque and chronic gingivitis: a double-blinded, randomized, controlled trial. | the aim of the present study was to explore the effects of iranian green tea mouthwash containing 1% tannin on dental plaque and chronic gingivitis. | 2017 | 26272266 |
| tea and flavonoid intake predict osteoporotic fracture risk in elderly australian women: a prospective study. | observational studies have linked tea drinking, a major source of dietary flavonoids, with higher bone density. however, there is a paucity of prospective studies examining the association of tea drinking and flavonoid intake with fracture risk. | 2015 | 26269364 |
| africa's oesophageal cancer corridor: do hot beverages contribute? | hot beverage consumption has been linked to oesophageal squamous cell cancer (ec), but its contribution to the poorly understood east african ec corridor is not known. | 2015 | 26245249 |
| comparing the antiplaque efficacy of 0.5% camellia sinensis extract, 0.05% sodium fluoride, and 0.2% chlorhexidine gluconate mouthwash in children. | dental caries is a multifactorial disease which requires a susceptible host, a cariogenic microflora, and a suitable substrate that must be present for a sufficient length of time. tea is prepared by the infusion of dried leaves of the tea plant, camellia sinensis, which contains bioactive compounds like polyphenols, flavonoids, and catechins that are thought to be responsible for the health benefits that have traditionally been attributed to tea. these compounds have multidimensional effects su ... | 2017 | 26236682 |
| thearubigins protect against acetaminophen-induced hepatic and renal injury in mice: biochemical, histopathological, immunohistochemical, and flow cytometry study. | acetaminophen toxicity is used as a model for studying chemical toxicity. n-acetylcysteine (nac) is used for the treatment of hepatotoxicity; however, there is no specific therapy for nephrotoxicity. | 2016 | 26234406 |
| transcriptome-based discovery of ap2/erf transcription factors related to temperature stress in tea plant (camellia sinensis). | tea plant (camellia sinensis) is an important natural resource for the global supply of non-alcoholic beverage production. the extension of tea plant cultivation is challenged by biotic and abiotic stresses. transcription factors (tfs) of the apetala 2 (ap2)/ethylene-responsive factor (erf) family are involved in growth and anti-stresses through multifaceted transcriptional regulation in plants. this study comprehensively analyzed ap2/erf family tfs from c. sinensis on the basis of the transcrip ... | 2015 | 26233577 |
| extraction kinetics of phytochemicals and antioxidant activity during black tea (camellia sinensis l.) brewing. | tea is the most consumed beverage in the world which is second only to water. tea contains a broad spectrum of active ingredients which are responsible for its health benefits. the composition of constituents extracted to the tea brew depends on the method of preparation for its consumption. the objective of this study was to investigate the extraction kinetics of phenolic compounds, gallic acid, caffeine and catechins and the variation of antioxidant activity with time after tea brew is made. | 2015 | 26226943 |
| global transcriptome and gene regulation network for secondary metabolite biosynthesis of tea plant (camellia sinensis). | major secondary metabolites, including flavonoids, caffeine, and theanine, are important components of tea products and are closely related to the taste, flavor, and health benefits of tea. secondary metabolite biosynthesis in camellia sinensis is differentially regulated in different tissues during growth and development. until now, little was known about the expression patterns of genes involved in secondary metabolic pathways or their regulatory mechanisms. this study aimed to generate expres ... | 2015 | 26220550 |
| does enzymatic hydrolysis of glycosidically bound volatile compounds really contribute to the formation of volatile compounds during the oolong tea manufacturing process? | it was generally thought that aroma of oolong tea resulted from hydrolysis of glycosidically bound volatiles (gbvs). in this study, most gbvs showed no reduction during the oolong tea manufacturing process. β-glycosidases either at protein or gene level were not activated during the manufacturing process. subcellular localization of β-primeverosidase provided evidence that β-primeverosidase was located in the leaf cell wall. the cell wall remained intact during the enzyme-active manufacturing pr ... | 2015 | 26212085 |
| identification and quantification of 1,3-dimethylbutylamine (dmba) from camellia sinensis tea leaves and dietary supplements. | 1,3-dimethylbutylamine (dmba), is a cns stimulant, which has recently been identified in multiple dietary supplements and sometimes labeled as a natural constituent of pouchung tea. dmba is an homologue of 1,3-dimethylamylamine (dmaa) which the us food and drug administration has attempted to remove from all dietary supplements after dmaa consumption was linked to strokes, heart disease, and sudden death. to address questions concerning the natural origin of dmba, three independent analytical me ... | 2015 | 26209774 |
| determinations for pesticides on black, green, oolong, and white teas by gas chromatography triple-quadrupole mass spectrometry. | black, green, white, and oolong teas, all derived from leaves of camellia sinensis, are widely consumed throughout the world and represent a significant part of the beverages consumed by americans. a gas chromatography-triple quadrupole-based method, previously validated for pesticides on dried botanical dietary supplements, including green tea, was used to measure pesticides fortified into black and green teas at 10, 25, 100, and 500 μg/kg. teas from 18 vendors of tea products were then surveye ... | 2015 | 26209005 |
| tea consumption and mortality of all cancers, cvd and all causes: a meta-analysis of eighteen prospective cohort studies. | epidemiological studies have demonstrated inconsistent associations between tea consumption and mortality of all cancers, cvd and all causes. to obtain quantitative overall estimates, we conducted a dose-response meta-analysis of prospective cohort studies. a literature search in pubmed and embase up to april 2015 was conducted for all relevant papers published. random-effects models were used to calculate pooled relative risks (rr) with 95 % ci. in eighteen prospective studies, there were 12 22 ... | 2015 | 26202661 |
| purple tea and its extract suppress diet-induced fat accumulation in mice and human subjects by inhibiting fat absorption and enhancing hepatic carnitine palmitoyltransferase expression. | a number of clinical trials have been completed using green tea and black tea to investigate their effect in controlling weight in overweight adults. the results of these investigations, however, have often been contradictory, with some trials reporting positive effects of tea supplementation and some trials reporting no effect. as a result, the use of these teas for weight loss is controversial. purple tea is a variety of green tea developed in kenya (called trfk306), which in addition to certa ... | 2015 | 26199579 |